CN218822544U - Anti-corrosion electrode sleeve, anti-corrosion electrode and electromagnetic flowmeter - Google Patents

Abstract

The application discloses anticorrosive electrode cover, anticorrosive electrode and electromagnetic flowmeter, relate to liquid velocity of flow measuring device technical field, anticorrosive electrode cover is including contact section and linkage segment, the two disconnect-type design makes anticorrosive electrode cover demountable installation on ordinary stainless steel electrode, the corrosion resistance of ordinary stainless steel electrode has been strengthened, establish the number of piles at the outside anticorrosive electrode cover of electrode through increasing the cover, can also further strengthen the corrosion resisting property of electrode, make its velocity of flow that can be used for detecting strong corrosive liquid, anticorrosive electrode establishes the life that anticorrosive electrode cover has prolonged the electrode through the cover, the use cost of electromagnetic flowmeter has been reduced, anticorrosive electromagnetic flowmeter, can detect ordinary liquid velocity of flow and have the liquid velocity of flow of strong corrosivity, great application scope has.

Description

Anti-corrosion electrode sleeve, anti-corrosion electrode and electromagnetic flowmeter

Technical Field

The application relates to the technical field of liquid flow velocity measuring devices, in particular to an anti-corrosion electrode sleeve, an anti-corrosion electrode and an electromagnetic flowmeter.

Background

The electromagnetic flowmeter is a speed type instrument which is based on Faraday's law of electromagnetic induction, compares the electromotive force generated by cutting magnetic lines by conductive fluid with the reference potential of the measured liquid, and finally converts the induced potential signal into flow speed and finally into volume flow. The working principle of the electromagnetic flowmeter determines that the measuring electrode must finish the electromotive force detection of the liquid to be detected when the electromagnetic flowmeter works, so that the electrode must contact the liquid to be detected.

Traditional electromagnetic flowmeter's electrode adopts stainless steel material to make, however in practical application, when measuring the liquid that awaits measuring that has strong corrosivity, stainless steel electrode still can be corroded rust, lead to measuring result great error to appear, frequently change the electrode and also increased electromagnetic flowmeter's use cost, current solution is the electrode of using all to make by corrosion resistance metal platinum, but utilize pure platinum to make the electrode greatly increased electromagnetic flowmeter's manufacturing cost.

SUMMERY OF THE UTILITY MODEL

Aiming at the problem that the cost of an electrode made of pure platinum is too high when an electromagnetic flowmeter measures strong corrosive liquid in practical application, the application aims to provide an anti-corrosion electrode sleeve, when the strong corrosive liquid needs to be detected, the anti-corrosion electrode sleeve is detachably sleeved outside a stainless steel electrode, the production cost is reduced, the contact between the strong corrosive liquid and the stainless steel electrode is effectively isolated, the accuracy of a detection result is ensured, and meanwhile, a connecting sheet made of nickel-titanium alloy is used for facilitating the installation and the disassembly of the anti-corrosion electrode sleeve; based on the anti-corrosion electrode sleeve, the second purpose of the application is to provide an anti-corrosion electrode, the service life of the electrode is prolonged, and the use cost of the electromagnetic flowmeter is reduced; based on above-mentioned anticorrosive electrode, this application purpose three lies in providing an anticorrosive electromagnetic flowmeter, can detect the ordinary liquid velocity of flow and have the liquid velocity of flow of strong corrosivity, has great application scope.

The specific scheme is as follows:

an anti-corrosion electrode sleeve comprises a contact section and a connecting section, wherein the contact section is immersed in liquid to be measured, and the connecting section is used for detachably connecting the contact section to an electrode;

the contact section is arc-shaped, the connecting section is tubular, one end of the connecting section is provided with a plurality of connecting sheets towards the direction close to the axis of the connecting section, and the connecting sheets are circumferentially arranged around the connecting section and detachably connected with the contact section;

a plurality of the connecting pieces are made of nickel-titanium alloy material.

By adopting the technical scheme, the arc-shaped contact section is arranged at the end part of the electrode contacted with liquid, the connecting section is sleeved on the periphery of the electrode, the connecting sheet made of nickel-titanium alloy has the characteristic of memory metal, and the connecting section and the contact section can be conveniently connected and fixed by utilizing the characteristic that the memory metal can recover the macroscopic form at different temperatures, so that the influence of the deformation of the bent metal on the accuracy of the detection result is avoided; after the electrode sleeve is corroded and rusted by the strong corrosive liquid, the anticorrosion electrode sleeve which is detachably arranged outside the electrode can be detached, and then the other anticorrosion electrode sleeve is installed, so that the service life of the electrode is prolonged, and the use cost of frequently replacing the electrode is reduced; when detecting common liquid, the anti-corrosion electrode sleeve can be detached, when detecting weak corrosive liquid, a layer of anti-corrosion electrode sleeve is arranged, when detecting strong corrosive liquid, at least two layers of anti-corrosion electrode sleeves are arranged, and the application range of the electrode and the electromagnetic flowmeter is enlarged; compared with the electrode made of pure platinum, the production cost is greatly reduced.

Preferably, the main bodies of the electrode sleeve contact section and the connecting section are made of platinum-iridium alloy, metal tantalum or hastelloy materials.

By adopting the technical scheme, the electrode sleeve is made of the platinum-iridium alloy, the metal tantalum or the hastelloy material which can resist strong corrosion, the corrosion resistance of the electrode sleeve is enhanced, the service life of the stainless steel electrode is prolonged, and meanwhile, compared with the electrode made of the corrosion-resistant material, the cost is effectively saved by making the corrosion-resistant electrode sleeve of the corrosion-resistant material.

Preferably, the thickness of the electrode sleeve contact section and the connecting section is set to be 0.3-0.6mm.

In the prior art, the plating layer plated on the outer surface of the electrode is generally about 1mm, the thickness of the electrode sleeve is limited to 0.3-0.6mm by adopting the technical scheme, the electrode sleeve has certain thickness while the shape of the electrode is not influenced, the electrode sleeve is convenient to mount and dismount between the connecting section and the contact section, and the deformation of the electrode sleeve is avoided to influence the mounting and the use.

Preferably, the connecting pieces are four in number and are circumferentially and uniformly arranged around the connecting section.

Through adopting above-mentioned technical scheme, the connection section can be guaranteed with contact segment zonulae occludens along the even connection piece that sets up of connection section circumference to four, simultaneously, makes things convenient for operating personnel's dismantlement installation, and the connection contact section can be stabilized to the even connection piece that sets up, effectively avoids the contact section to drop and leads to the internal electrode to be corroded.

Preferably, a sealing element for preventing corrosive liquid from penetrating into the connecting gap is further arranged between the connecting section and the contact section.

Through adopting above-mentioned technical scheme, there is the coming year to connect the gap between the linkage segment that the sectional type set up and the contact segment, still can cause partial corruption to the electrode after the liquid infiltration electrode cover is inside that has strong corrosivity, in order to further strengthen the leakproofness of electrode cover and then prolong the life of electrode.

Preferably, the joint of the connecting section and the contact section is a smooth curved surface.

Through adopting above-mentioned technical scheme, the junction of linkage segment and contact segment sets up to slick and sly curved surface, has played the guide effect for the liquid that flows through electrode tip department, avoids the electrode to influence the liquid velocity of flow and then influences the testing result of the liquid velocity of flow.

An anti-corrosion electrode comprises an electrode body made of stainless steel materials, wherein at least one layer of the anti-corrosion electrode sleeve is sleeved on the electrode body.

By adopting the technical scheme, the anti-corrosion electrode sleeve sleeved outside the electrode effectively isolates the strong corrosive liquid from contacting the stainless steel electrode, thereby ensuring the accuracy of the detection result and prolonging the service life of the stainless steel electrode; meanwhile, the stainless steel electrode and the electrode sleeve made of a strong corrosion-resistant material are combined for use, so that the production cost is greatly reduced.

Preferably, the electrode comprises an electrode head and an electrode rod integrally formed with the electrode head, the diameter of the electrode rod is gradually reduced from the direction far away from the electrode head to form a step-shaped bulge, and the shape of the connecting section of the anticorrosive electrode sleeve is matched with that of the electrode rod;

the electrode rod is provided with a mounting groove for mounting and fixing the electrode along the circumferential direction of the electrode rod.

Through adopting above-mentioned technical scheme, the diameter constantly reduces from the direction of keeping away from the electrode tip, has increased the diameter of electrode tip department, has increased the area of contact of electrode tip with the liquid that awaits measuring, has reduced the diameter of electrode pole simultaneously, has saved the cost, and the mounting groove is connected with other mutual card of structure of electromagnetic flowmeter, fixes the electrode in electromagnetic flowmeter's pipeline.

An anti-corrosion electromagnetic flowmeter is characterized by comprising the anti-corrosion electrode.

By adopting the technical scheme, the cost of frequently replacing the electrode when the electromagnetic flowmeter is used is effectively reduced, so that the anticorrosion electromagnetic flowmeter can detect common liquid and corrosive liquid, and the application range is enlarged.

Preferably, still dispose damage detection subassembly on the anticorrosive electromagnetic flowmeter, including set up in sensor between anticorrosive electrode cover contact segment and the electrode tip portion and set up in outside controller and the alarm of anticorrosive electromagnetic flowmeter, signal connection between sensor and the controller, to controller output breakage signal, control connection between controller and the alarm, output control signal control alarm work.

Because anticorrosive electrode setting is inside the detection pipeline, the staff can't in time look over the corruption condition of anticorrosive electrode cover on the electrode, through adopting above-mentioned technical scheme, can in time change the anticorrosive electrode cover that corrodes the damage, effectively avoid the electrode to be corroded.

Compared with the prior art, the beneficial effects of this application are as follows:

(1) The connecting sheet made of nickel-titanium alloy has the characteristics of memory metal, and the characteristic that the memory metal can recover the macroscopic form at different temperatures is utilized, so that the connecting section and the contact section can be conveniently connected and fixed, the influence of the deformation of the metal caused by bending on the accuracy of a detection result is avoided, and the production cost is greatly reduced compared with an electrode made of pure platinum;

(2) By arranging the detachable anti-corrosion electrode sleeve, after the electrode sleeve is corroded and rusted by strong corrosive liquid, the anti-corrosion electrode sleeve detachably arranged outside the electrode can be detached, and then the other anti-corrosion electrode sleeve is installed, so that the service life of the electrode is prolonged, the use cost of frequently replacing the electrode is reduced, meanwhile, compared with the electrode integrally made of platinum and the like, the cost is greatly reduced by manufacturing the detachable electrode sleeve by using corrosion-resistant metal, and the application range of the electrode and the electromagnetic flowmeter is enlarged by arranging the anti-corrosion electrode sleeves with different layers;

(3) Install anticorrosive electrode and electromagnetic flow meter of anticorrosive electrode cover, need not frequently to change the electrode, save the cost, can also conveniently remind the staff in time to change damaged anticorrosive electrode cover through setting up damaged determine module, avoid stainless steel's electrode body to receive corrosive liquids's harm.

Drawings

FIG. 1 is a schematic cross-sectional view of an erosion resistant electrode sheath according to the present application;

FIG. 2 is an enlarged view of section A of FIG. 1 of the present application;

fig. 3 is a schematic view of a corrosion protected electrode of the present application.

Reference numerals: 1. an electrode sheath; 11. a contact section; 12. a connecting section; 13. connecting sheets; 2. an electrode; 21. an electrode tip; 22. an electrode rod; 23. and (4) mounting the groove.

Detailed Description

The present application will be described in further detail with reference to examples and drawings, but the embodiments of the present application are not limited thereto.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application.

The utility model provides an anticorrosive electrode cover 1, as shown in figure 1 and combine figure 3, including contact segment 11 and linkage segment 12, the two disconnect-type designs make anticorrosive electrode cover 1 demountable installation on ordinary stainless steel electrode 2, the corrosion resistance of ordinary stainless steel electrode 2 has been strengthened, establish the number of piles of the anticorrosive electrode cover 1 of electrode 2 outside through increasing the cover, can further strengthen the corrosion resisting property of electrode 2, make it can be used for detecting the velocity of flow of strong corrosive liquid, after anticorrosive electrode cover 1 of outside cover is consumed by partial corrosion, for guaranteeing the accuracy of electromagnetic flowmeter measurement result, can directly lift outer anticorrosive electrode cover 1 off, reinstallate, the life of ordinary electrode 2 has been prolonged, compare in whole electrode 2 made by corrosion-resistant metal such as platinum also greatly reduced the cost.

In detail, as shown in fig. 1-2, the contact section 11 is in the shape of an arc circular sheet and is disposed at the end of the electrode 2 contacting the liquid to be detected, when the electromagnetic flowmeter is used, the contact section 11 is immersed in the liquid to be detected, the arc contact section 11 is matched with the radian of the end of the electrode 2, and can be tightly attached to the end of the electrode 2 after being installed, so as to avoid changing the shape of the electrode 2 to affect the accuracy of the detection result.

The linkage segment 12 is the tubulose, and on electrode 2 was located to the cover when using, one end was provided with a plurality of connection pieces 13 near its axis direction, and a plurality of connection pieces 13 set up around linkage segment 12 circumference, and in this application embodiment, connection piece 13 sets up to four and evenly sets up around linkage segment 12 circumference.

All adopt memory metal such as nickel titanium alloy to make for four connection pieces 13, buckle connection piece 13 to keeping away from the axis direction at low temperature, when placing it under normal atmospheric temperature state, connection piece 13 can resume to the state of its axial direction foling, utilizes memory metal such as nickel titanium alloy can resume macroscopic form's characteristics under different temperatures, can conveniently be connected the linkage segment 12 with contact segment 11 fixedly, avoids buckling the metal and leads to its deformation to influence the accuracy of testing result.

When the installation, anticorrosive electrode cover 1 need be under the low temperature environment, like in the liquid nitrogen environment, earlier connecting section 12 overlaps in the electrode 2 outside from one side of keeping away from electrode 2 tip, again set up contact segment 11 in electrode 2 tip, four connection pieces 13 can set up around the edge of contact segment 11 this moment, shift anticorrosive electrode cover 1 and electrode 2 to under the normal atmospheric temperature state again, make four connection pieces 13 to being close to its axis direction shrink, firmly grasp contact segment 11 of tip, according to above-mentioned mounting method, can be in electrode 2 externally mounted multilayer anticorrosive electrode cover 1.

In order to conveniently stack the multilayer anti-corrosion electrode sleeve 1 and further enhance the corrosion resistance of the electrode 2, the thickness of the contact section 11 and the thickness of the connecting section 12 are set to be 0.3-0.6mm, and the contact section and the connecting section have certain thickness, so that the phenomenon that the shape of the electrode 2 is changed by the multilayer anti-corrosion electrode sleeve 1 which is stacked and arranged to cause inaccurate measurement of the liquid flow rate is avoided.

The connecting section 12 and the contact section 11 are made of platinum-iridium alloy, metal tantalum or hastelloy material, and in the embodiment of the present invention, the platinum-iridium alloy material with the highest corrosion resistance is preferred. The nickel-titanium alloy material also has stronger corrosion resistance, so that the corrosion resistance of the whole anti-corrosion electrode sleeve 1 is greatly enhanced, and the measurement of the flow rate of liquid with strong corrosion is convenient.

Because anticorrosive electrode cover 1 is the disconnect-type design, the gap appears easily in linkage segment 12 and the junction of contact segment 11, makes the liquid that awaits measuring that has the corrosivity permeate anticorrosive electrode cover 1 inside through the gap, leads to stainless steel electrode 2 to be corroded rust, and then the influence is to the measurement of liquid velocity of flow. Therefore, in order to further optimize the corrosion-resistant electrode sheath 1, a sealing member is further provided at the joint, and preferably, the sealing member is configured as an annular rubber ring made of neoprene rubber material, which also has strong corrosion resistance and prevents corrosive liquid from penetrating into the joint gap.

The utility model provides an anticorrosive electrode 2, as shown in figure 3, including electrode 2 body, electrode 2 outside cover is equipped with at least one deck as before anticorrosive electrode cover 1, electrode 2 body is made by stainless steel material, electrode 2 outside anticorrosive electrode cover 1 has effectively kept apart the strong corrosive liquids who waits to detect and stainless steel electrode 2's contact, guarantee the accuracy of testing result, the life of stainless steel electrode 2 has been prolonged, simultaneously stainless steel electrode 2 and the 1 combined use of electrode cover that strong corrosion-resistant material made, greatly reduced manufacturing cost.

Detailed, 2 body integrated into one piece settings of electrode, whole be cone angle interpolation electrode 2, including electrode tip 21 and electrode pole 22, electrode pole 22 diameter is from keeping away from electrode tip 21 direction reduces gradually, and it is protruding to form the step form, and anticorrosive electrode cover 1's 12 shapes of linkage segment and electrode pole 22 shape looks adaptations make the two closely laminate after the installation, in this application embodiment, still be provided with annular mounting groove 23 along its circumference on the electrode pole 22 for fix anticorrosive electrode 2 inside the electromagnetic flowmeter.

The utility model provides an anticorrosive electromagnetic flowmeter, is including being used for through waiting to detect the detection pipeline of liquid, installs anticorrosive electrode 2 as before in the detection pipeline, has effectively reduced the cost of frequently changing electrode 2 when the electromagnetic flowmeter uses, makes anticorrosive electromagnetic flowmeter can detect ordinary liquid and corrosive liquids, has enlarged application scope.

Because anticorrosive electrode 2 sets up inside the detection pipeline, the staff can't in time look over the corruption condition of anticorrosive electrode cover 1 on the electrode 2, in order to change in time the anticorrosive electrode cover 1 that corrodes the damage, still dispose damage detection subassembly on the anticorrosive electromagnetic flowmeter, including setting up the sensor between 1 contact segment of anticorrosive electrode cover 11 and electrode tip 21 tip and setting up in the outside controller and the alarm of anticorrosive electromagnetic flowmeter, signal connection between sensor and the controller, control connection between controller and the alarm, the sensor exports the damage signal to the controller, the controller receives the work of output control signal control alarm behind the damage signal, in time remind the staff to change anticorrosive electrode cover 1.

The above description is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above embodiments, and all technical solutions belonging to the idea of the present application belong to the protection scope of the present application. It should be noted that several improvements and modifications to the present application without departing from the principles of the present application will occur to those skilled in the art, and such improvements and modifications should also be considered within the scope of the present application.

Claims (10)

1. An anti-corrosion electrode sheath is characterized by comprising a contact section (11) immersed in liquid to be measured and a connecting section (12) used for detachably connecting the contact section (11) to an electrode (2);

the contact section (11) is arc-shaped, the connecting section (12) is tubular, one end of the connecting section is provided with a plurality of connecting pieces (13) towards the direction close to the axis of the connecting section, and the connecting pieces (13) are circumferentially arranged around the connecting section (12) and detachably connected with the contact section (11);

a plurality of the connecting pieces (13) are made of nickel titanium alloy material.

2. The corrosion-resistant electrode sleeve as claimed in claim 1, wherein the main bodies of the contact section (11) and the connecting section (12) of the electrode sleeve (1) are made of platinum-iridium alloy, metal tantalum or hastelloy material.

3. Anti-corrosion electrode sheath according to claim 2, characterized in that the thickness of the contact section (11) and the connection section (12) of the electrode (2) sheath (1) is set to 0.3-0.6mm.

4. The corrosion-resistant electrode sheath according to claim 2, wherein the connecting pieces (13) are configured in four and are arranged circumferentially and uniformly around the connecting section (12).

5. The anti-corrosion electrode sleeve according to claim 2, wherein the joint of the connecting section (12) and the contact section (11) is a smooth curved surface.

6. Anti-corrosion electrode sheath according to claim 2, characterized in that a sealing element for preventing corrosive liquids from penetrating into the connecting gap is also arranged between the connecting section (12) and the contact section (11).

7. An anti-corrosion electrode, characterized by comprising an electrode body (2) made of stainless steel material, wherein at least one layer of the anti-corrosion electrode sleeve (1) as claimed in any one of claims 2-6 is sleeved on the electrode body (2).

8. The erosion-resistant electrode according to claim 7, characterized in that the electrode (2) comprises an electrode head (21) and an electrode rod (22) formed integrally therewith, the diameter of the electrode rod (22) is gradually reduced from the direction far away from the electrode head (21) to form a step-shaped bulge, and the shape of the connecting section (12) of the erosion-resistant electrode sleeve (1) is matched with the shape of the electrode rod (22);

the electrode rod (22) is provided with a mounting groove (23) used for mounting and fixing the electrode (2) along the circumferential direction of the electrode rod.

9. An anti-corrosion electromagnetic flowmeter, characterized by comprising an anti-corrosion electrode (2) according to any one of claims 7-8.

10. The corrosion-resistant electromagnetic flow meter according to claim 9, wherein a breakage detection assembly is further arranged on the corrosion-resistant electromagnetic flow meter, and comprises a sensor arranged between the contact section (11) of the corrosion-resistant electrode sleeve (1) and the end part of the electrode tip (21), and a controller and an alarm which are arranged outside the corrosion-resistant electromagnetic flow meter, wherein the sensor and the controller are connected through signals, the controller outputs breakage signals, and the controller and the alarm are connected through control, and the alarm outputs control signals to control the alarm to work.

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